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18.354

Nonlinear Dynamics: Continuum Systems

3-0-9 units · Undergraduate

General mathematical principles of continuum systems. From microscopic to macroscopic descriptions in the form of linear or nonlinear (partial) differential equations. Exact solutions, dimensional analysis, calculus of variations and singular perturbation methods. Stability, waves and pattern formation in continuum systems. Subject matter illustrated using natural fluid and solid systems found, for example, in geophysics and biology.

Spring 2015 · Nonlinear Dynamics II: Continuum Systems

Topics

  • Introduction, overview & mathematical basics
  • Dimensional analysis & scalings
  • Hamiltonian dynamics & Kepler’s laws
  • Random walkers
  • Diffusion equation: Fourier method
  • Diffusion equation: Green’s function method
  • Linear stability analysis & pattern formation
  • Calculus of variations
  • Surface tension
  • Elasticity
  • Deformation of a thin beam
  • Towards hydrodynamics
  • Navier-Stokes equations I
  • Hydrodynamics equations
  • Stokes limit & Oseen tensor
  • Navier-Stokes equations II
  • Singular perturbations
  • Towards airplane flight
  • Euler equations: Basic solutions and forces
  • 2D hydrodynamics
  • Conformal maps & airfoils
  • Waves & solitons
  • Final projects: Student presentations
  • Final projects: Student presentations (cont.)
  • Bouncing droplets
  • Topological defects & active matter

Readings

Prerequisites & course information

Same subject as 1.062[J] , 12.207[J] Subject meets with 18.3541 Prereq: Physics II (GIR) and ( 18.03 or 18.032 ) U (Spring) 3-0-9 units

Sources